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The DENSADEG — A New High Performance Settling Tank

  • Pascal Dauthuille
Conference paper

Abstract

The evolution of settling processes requires increasingly more efficient apparatus. Today the settling tanks must meet the following criteria:
  • Great compactness: high settling velocity.

  • Excellent treated water quality: use of lamellae.

  • Production of concentrated sludge: simultaneous sludge thickening.

The DENSADEG is a new compact clarifier-thickener capable of meeting all these requirements. It fits into the line of sludge recirculation type lamellae settling tanks using chemical reagents. The original design of the reactor induces both a highly dense and homogeneous floc and settling velocities ranging from 20 to 40 m/h. In addition to settling, sludge thickening takes place in the DENSADEG (30 to 500 g/l); the thickened sludge can then be directly handled by a dewatering unit. More than fifty DENSADEG are presently in operation around the world in many areas of applications: drinking water, urban wastewater, sludge treatment, industrial water and storm water treatment.

An example is discussed in drinking water (Morsang-sur-Seine) and in urban wastewater (Gréoux-les-Bains).

Keywords

Maximum Flow Rate Settling Tank Filter Stage High Settling Rate Aluminium Sulphate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1992

Authors and Affiliations

  • Pascal Dauthuille
    • 1
  1. 1.DegremontRueil-Malmaison CedexFrance

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